<template>
  <el-container class="home-container">
    <!--头部区域-->
    <el-header>
      <div>
        <img src="../assets/heima.png"  alt/>
        <span>管理员界面</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!--页面主体区域-->
    <el-container>
      <!--侧边栏-->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">
          <i :class="isCollapse ? 'iconfont icon-jichu-tubiao-xianxing-zhediezhankai' : 'iconfont iconcebianlan'"></i>
        </div>
        <!--侧边栏菜单区-->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!--一级菜单-->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!--一级菜单的模板区域-->
            <template slot="title">
              <!--图标-->
              <i :class="item.icon"></i>
              <!--文本-->
              <span>{{ item.authName }}</span>
            </template>

            <!--二级菜单-->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id"
                          @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <!--图标-->
                <i class="el-icon-menu"></i>
                <!--文本-->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--右边主体区域-->
      <el-main>
        <!--路由占位符-->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data () {
    // 由于没有后端接口，暂时菜单写死
    return {
      // 菜单列表
      menulist: [],
      // 是否折叠
      isCollapse: false,
      // 激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 登录退出
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 菜单的折叠
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    },
    // 获取所有的菜单信息
    async getMenuList () {
      // const {data:res} = await this.$http.get('menus')
      // if(res.meta.status !== 200)
      //     return this.$message.error(res.meta.msg)
      // this.menulist = res.data
      // console.log(res)
      this.menulist = [
        {
          id: 150,
          authName: '权限管理',
          path: 'rights',
          icon: 'iconfont iconquanxian',
          children: [
            {
              id: 102,
              authName: '角色列表',
              path: 'roles',
              children: []
            },
          ]
        },{
          id: 151,
          authName: '租户管理',
          path: 'tenants',
          icon: 'iconfont iconquanxian',
          children: [
            {
              id: 113,
              authName: '租户管理(管理员)',
              path: 'tenant',
              children: []
            },
            {
              id: 114,
              authName: '计费管理',
              path: 'fee',
              children: []
            }
          ]
        }
      ]
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #2c303b;
  display: flex;
  justify-content: space-between;
  padding-left: 5px;
  align-items: center;
  color: #fff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 6px;
}

.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
